<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>太极十八式</title>
    <style>
        .box{
            width: 197px;
            height: 210px;
            border: 1px solid black;
            background-image: url(./tj.png);
            animation: tj 5s steps(6) infinite;
        }

        @keyframes tj{
            0%{background-position: 0 0;}
            33%{background-position: 1185px 0;}
            34%{background-position: 0 210px;}
            66%{background-position: 1185px 210px;}
            67%{background-position: 0 420px;}
            100%{background-position: 1185px 420px;}
        }
    </style>
</head>
<body>
    <div class="box"></div>
</body>
</html>